Progressive Collapse Analysis for Steel-Braced Frames Considering Vierendeel Action

Huang, Qiao; Luo, Caisong; Wei, Jian-peng; Chen, Yu

doi:10.1061/(asce)cf.1943-5509.0001475

Cited by 14 publications

(3 citation statements)

References 22 publications

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“…Many studies have been performed to investigate the contribution of structural members such as beams and columns in the vicinity of the removed column and the effect of different lateral bearing systems against progressive collapse [22][23][24][25][26][27][28][29][30]. In other studies, different types of progressive collapse analysis methods were investigated [31][32][33][34][35][36][37][38]. Several researchers investigated different types of beam-column connections on the response of concrete and steel structures against progressive collapse [39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Shokhoohfar

Kaafi

2022

IJE

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Diaphragms are a fundamental part of the earthquake-resistant system, and in terms of rigidity, it is essential to transmit dynamic loads on a base of the structure. Also, floor openings on the response of buildings against progressive collapse are issues that have received less attention. In this study, floor opening surfaces and their positions on the progressive collapse potential of steel moment-resisting frame (SMRF) buildings were investigated according to the alternate load path method. Moreover, to retrofit and rehabilitate the two-way reinforced concrete (RC) slabs against a progressive collapse, two strategies, prestressed concrete slabs and installing carbon fiber reinforced polymer sheets on the surface of the old concrete slab, were proposed and six-story SMRF buildings were simulated using the finite element method. The maximum axial force around the removal column is 20% greater than the corresponding values on the floor opening is in the corner of the plan and the appropriate performance of the prestressed concrete slab leads to the load distribution in the ceiling diaphragm.

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Section: Introductionmentioning

confidence: 99%

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Shokhoohfar

Kaafi

2022

IJE

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“…As a consequence, under certain circumstances, extreme loading conditions (such as fire, impact, blast, material defects, construction errors, ad so on) may cause the failure of structural load-bearing elements, thus activating the progressive collapse of the building. To avoid global catastrophic scenarios, after the failure of a critical member or connection, the acting loads should be redistributed on adjacent structural members, using different load redistribution mechanisms, namely alternate load path, tie force, tensile catenary, compressive arching, as well as Vierendeel actions (Byfield & Paramasivam, 2007;Guo et al, 2013;Ferraioli et al, 2014Ferraioli et al, , 2016Ferraioli et al, , 2018Ferraioli et al, , 2019aZha et al, 2010;Qiao et al, 2020;Lu et al, 2018). If properly accounted for in the design, such mechanisms enable the structure to guarantee life protection by avoiding global collapse.…”

Section: Introductionmentioning

confidence: 99%

Progressive Collapse Assessment and Retrofit of a Multistory Steel Braced Office Building

2022

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The progressive collapse of the building structures due to abnormal loads has attracted global attention in recent years. Many studies in the literature have been dedicated to the analysis and design procedures for progressive collapse resistance, and several technological solutions have been developed for progressive collapse retrofit. However, many studies are based on simple models and their validity and possibility to generalize the research results to current practice are rather limited. Moreover, there are still not many case studies developed based on full-scale real buildings. The present paper contributes to filling this gap by investigating the robustness of a quite complex real case study, namely a steel braced frame building erected in the early ‘60 s in Naples-Italy to house the Civil Engineering Authority. To this aim, different column removal scenarios have been considered and both nonlinear static and dynamic analyses have been carried out. The results have highlighted that the simple braced frames are susceptible to progressive collapse due to the weak brace connections. However, joint strengthening is not a viable solution, because it would prevent the full functionality of this strategic building during the implementation of the progressive collapse retrofit. As an alternative, an outrigger-belt truss system has been developed that applies the concept of Vierendeel truss system to redistribute the loads due to the column removal. The effectiveness of the proposed retrofit strategy to improve the progressive collapse resistance of the building has been verified through nonlinear dynamic analyses, proving its feasibility for practical applications.

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“…The increase in ductility and decrease in progressive collapse potential was observed as the brace section reduced in SCBF and link beam length increase in EBF. Qiao et al [3] analysed the steel braced frames under progressive collapse considering vierendeel action. The 4-bay, 3-storey steel moment frame with inverted V bracing was analysed in ABAQUS and developed an expression for progressive collapse resistance through vierendeel action for n-story building.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Progressive Collapse Potential of Steel Moment Resisting Frame and Braced Frame

Patel¹,

Joshi²

2022

ASPS Conf. Proc.

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Progressive collapse is a situation where local failure of a primary structural component leads to the failure of adjoining members, which in turn leads to spread of failure resulting in the collapse of an entire structure or disproportionately large part of it. In this paper, the effectiveness of inverted V type bracings on progressive collapse resistance of steel building is presented. 4-storey moment resisting steel frame building is considered for the study. Progressive collapse analysis is carried out under ten different column and/or bracing removal scenario from the ground floor level by following the U. S. General Services Administration (GSA) guidelines. Linear Static and Linear Dynamic analysis is performed to evaluate progressive collapse potential of 4-storey steel building considered for the study using SAP2000 software. Alternate Path Method (APM) is used to determine the Demand Capacity Ratio (DCR) of selected beam, column and bracing members located in surrounding of removed column. From the analysis results in terms of DCR of beams and columns, it is observed that the addition of bracing members, reduces the risk of progressive collapse.

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Progressive Collapse Analysis for Steel-Braced Frames Considering Vierendeel Action

Cited by 14 publications

References 22 publications

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Progressive Collapse Assessment and Retrofit of a Multistory Steel Braced Office Building

Comparative Study of Progressive Collapse Potential of Steel Moment Resisting Frame and Braced Frame

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